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Taiwan Semiconductor Corporation SK24AHR3G
- Part No.:
- SK24AHR3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SK24AHR3G.pdf
- Description:
- DIODE SCHOTTKY 40V 2A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,523
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Product details
Overview
SK24AHR3G from Taiwan Semiconductor is a 2 A, 40 V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, qualified to AEC-Q101, with 0.50 V forward voltage at 2 A and 25°C, 50 A surge capability, and junction temperature rating up to +125°C. It serves as a low-loss freewheeling or reverse-battery protection diode in automotive lighting and DC/DC converters.
For engineers reviewing the SK24AHR3G datasheet, SK24AHR3G pinout, SK24AHR3G application, or SK24AHR3G equivalent, key selection criteria include its 40 V repetitive peak reverse voltage, 0.50 V forward voltage at rated current, AEC-Q101 qualification, moisture sensitivity level 1, and DO-214AC mechanical compatibility with automated SMT placement.
Technical Context
This discrete Schottky rectifier uses a single-die construction with guard ring for over-voltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its low VF enables high efficiency in low-voltage, high-frequency switching paths where conduction loss dominates thermal design.
The device operates across –55°C to +125°C junction temperature range, exhibits 10,000 V/µs critical dV/dt rating, and delivers 20 mJ non-repetitive avalanche energy under 40 mH inductive load-supporting robust transient immunity in automotive power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in reverse-biased applications like reverse battery protection. |
| IF | 2 A - Continuous forward current rating; determines steady-state power dissipation and heatsink requirements. |
| VF @ 2 A, 25°C | 0.50 V - Low forward drop reduces conduction loss by ~30% vs. comparable silicon diodes, improving system efficiency. |
| IFSM | 50 A - Peak surge current handling for 8.3 ms half-sine; supports inrush and fault-current transients in automotive DC/DC stages. |
| TJ max | +125°C - Maximum junction temperature; enables operation in engine-bay–adjacent locations without derating below full current. |
| RθJA | 88°C/W - Junction-to-ambient thermal resistance; informs PCB copper area and airflow needs for thermal management. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount plastic case with cathode band marking; meets UL 94V-0 flammability, JESD201 Class 2 whisker resistance, and J-STD-020 moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., ground or switch-node return); polarity must align with schematic symbol. |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by visible band; connects to higher-potential rail (e.g., battery+, output of buck converter). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables use in safety-critical lighting and body control modules. |
| Guard ring structure | Enhances edge termination robustness against voltage overstress, improving long-term stability in noisy 12 V vehicle electrical systems. |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; compatible with standard SMT assembly lines without process modification. |
| Halogen-free & RoHS compliant | Meets global environmental regulations and end-of-life recycling requirements for automotive OEM supply chains. |
Applications
| Automotive LED Lighting | DC/DC Converter Freewheeling |
|---|---|
Use Scenario: Powering headlamp or DRL modules supplied from 12 V battery with PWM dimming and reverse-polarity protection. IC Role / Device Role / Timing Role: Reverse battery protection diode and freewheeling path during MOSFET off-time in boost/buck topology. Use Value: 0.50 V VF minimizes heat generation in confined lamp housings; AEC-Q101 ensures >15-year field reliability under thermal cycling. | Use Scenario: Output rectification in 5–24 V input, 3.3–12 V output synchronous or quasi-synchronous buck converters. IC Role / Device Role / Timing Role: Freewheeling diode providing continuous current path when high-side switch is off. Use Value: Low VF and fast recovery reduce conduction loss and improve light-load efficiency; DO-214AC footprint allows compact layout near inductor. |
| Reverse Battery Protection | Low-Voltage Industrial Power Rails |
Use Scenario: Preventing damage during jump-start or incorrect battery connection in telematics or infotainment ECUs. IC Role / Device Role / Timing Role: Series-connected blocking diode on main 12 V input rail. Use Value: 40 V VRRM provides 3× margin over nominal 12 V system; 50 A IFSM withstands jump-start surges without failure. | Use Scenario: Input protection and rail clamping in 3.3 V or 5 V industrial sensor nodes powered from local DC/DC regulators. IC Role / Device Role / Timing Role: Polarity protection and transient clamping element on regulated supply inputs. Use Value: Low leakage (<0.5 mA @ 40 V, 25°C) prevents standby current drain; SMA package enables high-density board layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS24-E3/57T (Vishay) | Same 40 V VRRM, 2 A IF, DO-214AC package; VF = 0.55 V @ 2 A, slightly higher than SK24AHR3G's 0.50 V. | No AEC-Q101 qualification; suitable for commercial/industrial but not automotive-grade designs. | Select SS24-E3/57T where automotive qualification is unnecessary and Vishay supply chain preference applies. |
| SB240-E3/57T (Vishay) | 40 V VRRM, 2 A IF, DO-214AC; VF = 0.52 V @ 2 A; TJ max = +125°C; also lacks AEC-Q101 certification. | Higher IR (1.0 mA @ 40 V, 25°C) vs. SK24AHR3G's 0.5 mA-less ideal for ultra-low-quiescent systems. | Prefer SB240-E3/57T only if legacy design reuse or dual-sourcing with Vishay is required; verify leakage impact in battery-powered systems. |
Compared with SS24-E3/57T and SB240-E3/57T, SK24AHR3G offers lower forward voltage and mandatory AEC-Q101 compliance-making it the sole choice for new automotive designs requiring both efficiency and qualification traceability.
Availability
SK24AHR3G is available at Aetrix Electronics and suitable for automotive LED lighting, DC/DC converter freewheeling, and reverse battery protection applications requiring stable component supply and automotive-grade reliability.
Supply support for SK24AHR3G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in power discretes, analog ICs, and TVS devices, with ISO/TS 16949-certified automotive production lines.
The SK2xAH series was designed specifically for automotive and industrial power conversion applications demanding high surge robustness, low VF, and AEC-Q101 compliance in compact surface-mount packages.
FAQ
What is the maximum junction temperature rating for SK24AHR3G?
The SK24AHR3G has a maximum junction temperature (TJ max) of +125°C, validated per its AEC-Q101 qualification. This rating allows uninterrupted 2 A operation in ambient environments up to +85°C with appropriate PCB copper area, and supports short-duration exposure to higher temperatures typical in under-hood automotive locations. The SK24AHR3G datasheet specifies derating curves confirming full current capability up to this limit.
Is SK24AHR3G suitable for reverse battery protection in 12 V automotive systems?
Yes, SK24AHR3G is explicitly suited for reverse battery protection in 12 V systems. Its 40 V VRRM provides 3× margin over nominal battery voltage, and its 50 A IFSM withstands jump-start surges. The AEC-Q101 qualification, guard ring structure, and moisture sensitivity level 1 ensure reliability in automotive assembly and field operation-key requirements confirmed in the SK24AHR3G product documentation.
What is the forward voltage of SK24AHR3G at 2 A and 25°C?
The forward voltage (VF) of SK24AHR3G is 0.50 V at 2 A and 25°C, measured under pulse test conditions (PW = 0.3 ms). This value is specified in the Electrical Specifications table of the official SK24AHR3G datasheet and reflects its low-conduction-loss advantage over silicon rectifiers. At elevated temperatures (e.g., 100°C), VF decreases slightly, maintaining high efficiency across operating range.
Does SK24AHR3G have halogen-free and RoHS-compliant construction?
Yes, SK24AHR3G is both halogen-free and RoHS compliant, as stated in the Features section of its official documentation. The molding compound and plating materials meet EU RoHS Directive 2011/65/EU and IEC 61249-2-21 standards. This compliance is verified through material declarations and is essential for automotive OEMs requiring full substance traceability and environmentally responsible manufacturing.
What package type does SK24AHR3G use, and is it compatible with standard SMT processes?
SK24AHR3G uses the DO-214AC (SMA) surface-mount package, with matte tin-plated leads solderable per J-STD-002 and moisture sensitivity level 1 per J-STD-020. This eliminates pre-bake requirements and ensures full compatibility with standard reflow profiles-including lead-free SAC305-and automated pick-and-place equipment used in high-volume automotive electronics manufacturing.
SK24AHR3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK24AHR3G FAQ
1.How can I place an order for SK24AHR3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK24AHR3G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SK24AHR3G reliable?
The price and inventory of SK24AHR3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK24AHR3G is usually 5 days.
3.What payment methods are accepted for SK24AHR3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK24AHR3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK24AHR3G?
SK24AHR3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK24AHR3G order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SK24AHR3G?
For technical support, including SK24AHR3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK24AHR3G requirements.
6.How does Aetrix verify that SK24AHR3G is sourced from the original manufacturer or authorized distributors?
All SK24AHR3G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SK24AHR3G meets industry standards.
7.What is the process for return or replacement of SK24AHR3G?
All SK24AHR3G units undergo pre-shipment inspection (PSI). If there is an issue with SK24AHR3G, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SK24AHR3G part is unused and in its original packaging.
Return procedure for SK24AHR3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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